Observations of field-aligned ion and electron beams from SCATHA /P78-2/

Details Observations of field-aligned ion and electron beams from SCATHA /P78-2/ Observations of field-aligned ion and electron beams from SCATHA /P78-2/

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....8610105r&link_type=abstract

Journal of Geophysical Research, vol. 86, Nov. 1, 1981, p. 10105-10110.

Physics

12

Electron Beams, Ion Beams, Satellite Observation, Scatha Satellite, Energy Spectra, Equatorial Atmosphere, Explorer 12 Satellite, Kp Index, Satellite-Borne Instruments

Scientific paper

Intense field-aligned beams of ions and electrons have been observed by electrostatic analyzers on the SCATHA (P78-2) satellite. The beams have peaked energy spectra with energies ranging from tens of eV to several keV. These beams show a strong local time dependence, with occurrence frequencies peaking near local midnight. The occurrence frequencies of these beams are also positively correlated with Kp. Comparisons have been done with S3-3 observations of field-aligned ion fluxes, suggesting a direct relationship between acceleration of ions at low altitude in the auroral region and the observations of field-aligned beams at the equator near synchronous orbit.

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